javascript - Jquery RegEx start by plus or minus and numbers only -


i create regular expression allows start plus or minus symbol, followed floating numbers. in order get:

+3 return true; 3 return false; -3. return false; -3.75 return true;

for now, have this: var re = /^[-+]?[0-9]*\.?[0-9]+$/;. think i'm close, have idea? in advance

it's better use optional group catching decimal part.

^[+-]\d+(?:\.\d+)?$

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